Air purifier



FIG. 1 is a front perspective view of an air purifier showing our newdesign;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a right side elevation view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof; and,

FIG. 9 is an enlarged view of portion 9 in FIG. 1 .

The evenly spaced broken lines illustrate portions of the air purifierthat form no part of the claimed design.

CLAIM The ornamental design for an air purifier, as shown and described.